Níðhöggr

Níðhöggr gnaws the roots of Yggdrasill in this illustration from a 17th-century Icelandic manuscript.

In Norse mythology, Níðhǫggr (Malice Striker, often anglicizedNidhogg[1]) is a dragon who gnaws at a root of the world tree, Yggdrasil. In historical Viking society, níð was a term for a social stigma implying the loss of honor and the status of a villain. Thus, its name might refer to its role as a horrific monster or in its action of chewing the corpses of the inhabitants of Náströnd: those guilty of murder, adultery, and oath-breaking, which Norse society considered among the worst possible crimes.

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In the standardized Old Norse orthography, the name is spelled Níðhǫggr, but the letter 'ǫ' is frequently replaced with the Modern Icelandic ö for reasons of familiarity or technical expediency.

The name can be represented in English texts with i for í; th, d or (rarely) dh for ð; o for ǫ and optionally without r as in Modern Scandinavian reflexes. The Modern Icelandic form Níðhöggur is also sometimes seen, with special characters or similarly anglicized. The Danish forms Nidhug and Nidhøg can also be encountered; or NorwegianNidhogg and SwedishNidhögg.

According to the Gylfaginning part of Snorri Sturluson's Prose Edda, Níðhǫggr is a being which gnaws one of the three roots of Yggdrasill. It is sometimes believed that the roots are trapping the beast from the world. This root is placed over Niflheimr and Níðhǫggr gnaws it from beneath. The same source also says that "[t]he squirrel called Ratatoskr runs up and down the length of the Ash, bearing envious words between the eagle and Nídhǫggr [the snake]."[2]

In the Skáldskaparmál section of the Prose Edda Snorri specifies Níðhǫggr as a serpent in a list of names of such creatures:

The poem Grímnismál identifies a number of beings which live in Yggdrasill. The tree suffers great hardship from all the creatures which live on it. The poem identifies Níðhǫggr as tearing at the tree from beneath and also mentions Ratatoskr as carrying messages between Níðhǫggr and the eagle who lives at the top of the tree. Snorri Sturluson often quotes Grímnismál and clearly used it as his source for this information.

The poem Völuspá mentions Níðhöggr twice. The first instance is in its description of Náströnd.

The context and meaning of this stanza are disputed. The most prevalent opinion is that the arrival of Níðhǫggr heralds Ragnarök and thus that the poem ends on a tone of ominous warning. It could be however, as the prevalent themes of Norse mythology are those of change and renewal, that this could be a 'redemption' of the serpent, 'shedding' the corpses and beginning life anew, much like a macabre Phoenix.

^While the suffix of the name, -höggr, clearly means "striker" the prefix is not as clear. In particular the length of the first vowel is not determined in the original sources. Some scholars prefer the reading Niðhöggr (Striker in the Dark).